When you nut so hard that you stumble and almost fall over. Causing someone to stumblenut can be a point of pride.
Dave: Lauren sucked me off so good last night that I almost fell over!
Robert: Damn, she made you stumblenut? That's lit, I haven't had a succ that good since my ex left me!
Robert: Damn, she made you stumblenut? That's lit, I haven't had a succ that good since my ex left me!
by Owens4lyfegod420 April 19, 2019
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